SYiXODONTIS. 



429 



back, and adipose fin ; fins grey or olive, with numerous small round 

 black spots ; fringe of maxillary barbels black. 



Total length 195 millim. 



White Nile. 

 1. One of the types. Goz abu Guinah. li. Loat, Esq. (C). 



24. SYNODONTIS NIGRITA. 



Cuv. & Val. Hi.st. Poiss. xv. p. 2G5, pi. ccccxh. (1840); Qiinth. Cat. Fish. v. 

 p. 214 (1864); Steind. Sitzb. AU. Wien, Ixi. i. 1870, p. 535; Vaill. N. Arch. 

 Mus. (3) viii. 1890, p. 149, & vii. pi. xiii. fig. 1 ; Werner, Sitzb. Ak. Wien, 

 cxv. i. 1906, p. 1141 ; Bouleng. Fish. Nile, p. 366, pi. Ixxi. fig. 1 (1907). 



Hemisynodonlis nigrita, Bleek. Nederl. Tijdschr. Dierk. i. 1863, p. 55. 



Depth of body 3 to 3| times in total length, length of head 3 to 3i 



Fifr. 322. 



Synodoniis nigrita. 

 White Nile (F. N.). f . 



times. Head a little longer than bread, rugose, granulate above from 

 between the eyes ; snout rounded, as long as postocular part of head : 

 eye supero-lateral, 4 to b\ times in length of head, I^ to 2| times in 

 interorbital width ; lips moderately developed ; prsemaxillary teeth 

 forming a short and broad band; movable mandibular teeth not more 

 than ^ diameter of eye, 30 to 35 in number. Maxillary barbel with a 

 broad marginal membrane in its basal third, 1 to If times length of 

 head, reaching between anterior and posterior fourth of pectoral spine ; 

 outer mandibular barbel about twice as long as innciv, both with shorty 



